we think of it as energy everywhere. >> on demand energy. >> because here we are. it's a rainy day. if we had a solar panel, what would happen? it's not working. but we're generating electricity and you're charging your phone right now. >> so you have the patents. what do you have? what do you own about this? >> sure. absolutely. so we do have patents in the u.s. and in asia, africa, and europe. but in addition to that we have an incredible team of engineers and scientists who are not only developing cook stoves but a whole range of energy technologies. and so where we really see our role as a company is in providing personal scale energy access that's affordable and safe and reliable. >> talk about affordability. how much is this? >> these stoves are $130. >> okay. now, you are in brooklyn, new york. but you don't make these here, right? >> we don't. >> you have a factory -- >> we manufacture -- we manufacture in asia. and then -- but it's all based on the designs and the engineering of the team right here in new york. >> now, i've looked at this in the videos. how long does it tak